Journal: Journal of Insects as Food and Feed

Abbreviation

Publisher

Wageningen Academic

Journal Volumes

ISSN

2352-4588

Description

Filters

20244
Reset filters

Search Results

Publications1 - 4 of 4
  • Decision support system for insects production
    Item type: Other Conference Item
    Bhatia, Ankit; Mouhrim, Nabil; Green, Ashley; et al. (2024)
    Journal of Insects as Food and Feed ~ Insects to Feed the World 2024
    Insect value chains are complex systems with non-linear connections among various economic, environmental, and social variables. Industrial stakeholders often require clarity in potential environmental impacts, social issues and economic costs for efficient decision-making. This study employed a modular life cycle approach to analyze insect production chains, considering economic, environmental, and certain social aspects within the frameworks of the EU projects SUSINCHAIN, ADVAGROMED, CIPROMED and GiantLeaps. Integration of results from separate modules was based on developed scaling factors. These factors were further used to design multiple production scenarios, employed for multi-objective optimization (MOO) and the design of a decision-support system (DSS). The DSS accounted for a mix of sustainability relevant factors. The DSS functions as an online tool available in open access and could be further optimized and programmed in future research. Moreover, MOO allows for identifying a larger range of optimal scenarios with varying objectives. For example, for the companies producing Hermetia illucens and operating at large scale in Germany the optimal from sustainability perspectives will be 5 feed scenarios: (1) 98.3 % brewery spent grains, 1.3% chicken feed; (2) 81.5 % brewery spent grains, 18.5% vegetable rests; (3) 81.8 % brewery spent grains, 8.4% vegetable rests, 7.3% chicken feed, 2.5% milling rests; (4) 67.4 % brewery spent grains, 14.1% vegetable rests, 18.5% chicken feed; (5) 91.6 % brewery spent grains, 8.4% chicken feed. Further research is needed (and planned) to identify a broader spectrum of optimal scenarios for a range of alternative protein sources as well as to validate MOO results through the real-life development of sustainable insect chains and to assess its ‘optimality.’
  • Physical waste properties alter temperature, respiration and rearing performance in black soldier fly bioconversion
    Item type: Other Conference Item
    Fuhrmann, Adrian Julius; Gold, Moritz; Loh Ker, Rebecca; et al. (2024)
    Journal of Insects as Food and Feed ~ Insects to Feed the World 2024
  • Towards urban food system circularity: Managing food waste in cities with Black Soldier Fly bioconversion
    Item type: Other Conference Item
    Mangal, Niraly; Chong, Ruth; Cairns, Stephen (2024)
    Journal of Insects as Food and Feed ~ Insects to Feed the World 2024
  • Metabolism and growth of BSFL under factory and laboratory conditions
    Item type: Other Conference Item
    Schøn, Maja; Nedergaard Mikkelsen, Maja Viktoria; Jensen, Kim; et al. (2024)
    Journal of Insects as Food and Feed ~ Insects to Feed the World 2024
    Considering the need for optimization and monitoring of large-scale production of black soldier fly larvae (BSFL, Hermetia illucens) for food and feed, we conducted a series of respirometry experiments under both large-scale commercial conditions and small-scale laboratory conditions to investigate effects of rearing temperature and diet composition. In our initial experiment at ~35°C, we validated that our small-scale respiratory setup (0.4 kg of feed, 600 BSFL) generated similar data on growth, survival, metabolic rate, feed conversion and body composition as in large-scale growth stables (>8,000 kg of feed, >12 million BSFL). Using our small-scale setup, we then investigated the impact of temperature (27°C to 42°C) during a 7-day rearing period. The continuous respiration measurements revealed faster development through the final larval instars at higher temperatures, but after the 7-day growth period, total larval biomass was high at temperatures ranging from 27°C to 39°C, while 42°C severely reduced growth and respiration. We found rearing at 27°C to result in marginally higher larval biomass, higher protein content and reduced CO2 emissions per gram larvae. In a final set of experiments with the small-scale setup, we investigated variations in dietary protein to carbohydrate ratios during a 7-day rearing period. We found strong positive correlations among protein content, metabolic rate and total growth, and high protein diets also produced leaner larvae. The respiratory gas exchange ratio (RER, CO2 production/O2 consumption) correlated strongly with larval lipid content as this ratio is reflective of both catabolic (maintenance metabolism) and anabolic (growth and lipogenesis) processes. In conclusion, continuous measurements of gas exchange from BSFL production systems holds considerable promise to effectively monitor developmental rate, gross larval production and larval body composition.
Publications1 - 4 of 4